Engine Start-Up Mode

When the starter motor is engaged, the ECU receives inputs from the CTS and speed sensors, the starter motor relay, and the wide open throttle switch. The fuel pump is activated by the ECU and voltage is applied to the injector, with the ECU controlling injection time.

The ECU determines proper ignition timing from the speed sensor input. If the wide open throttle switch is engaged, the ECU will deactivate the injector to prevent flooding.